Universal spare tire fixing frame for low flatbed semitrailer

Abstract

The utility model relates to the technical field of semitrailers, in particular to a universal spare tire fixing frame for a low flatbed semitrailer. A universal spare tire fixing frame for a low flatbed semitrailer comprises a spare tire frame vertical support and a spare tire anti-loosening fastening assembly, the bottom of the spare tire frame vertical support is welded to a vehicle frame loading face, and the spare tire anti-loosening fastening assembly is detachably installed at the top of the spare tire frame vertical support. The maximum size of the upper plane of the spare tire frame vertical support is larger than the diameter of a center hole of a semitrailer tire radial plate with the minimum specification and smaller than the minimum inner diameter of a semitrailer tire rim with the minimum specification, and the maximum size of the spare tire anti-loosening fastening assembly is larger than the diameter of a center hole of a semitrailer tire radial plate with the maximum specification. The utility model aims to solve the problem of low matching degree of the spare wheel carrier of the low flat-bed semitrailer to different tires, so that the universal installation of different tires of a tractor and the low flat-bed semitrailer is facilitated, and the installation and fixation of different tires in the domestic market are met; and meanwhile, the spare tire is convenient to fix and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, and specifically, it relates to a universal spare tire fixing bracket for low-bed semi-trailers. Background Art

[0002] Low-bed trains mainly consist of tractors and low-bed semi-trailers. Currently, there are significant differences in the tire specifications between the tractors and low-bed semi-trailers in low-bed trains. Generally, tractors do not have spare tire racks, and it is difficult for the spare tire racks of low-bed semi-trailers to accommodate the use of tractor tires.

[0003] Since there are many specifications of semi-trailer tires in China, the rim and spoke plate sizes of the tires are different. Therefore, the current spare tire racks of low-bed semi-trailers cannot meet the installation and fixation of different tires in the domestic market, and the versatility is poor.

[0004] In order to solve the above existing problems, people have been seeking an ideal technical solution. Summary of the Invention

[0005] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a universal spare tire fixing bracket for low-bed semi-trailers. The utility model aims to solve the problem of low matching degree of the spare tire rack of low-bed semi-trailers for different tires, facilitate the universal installation of different tires of tractors and low-bed semi-trailers, and meet the installation and fixation of different tires in the domestic market; at the same time, it is convenient for the fixation and disassembly of tires.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a universal spare tire fixing bracket for low-bed semi-trailers, including a spare tire rack vertical support and a spare tire anti-loosening fastening component. The bottom of the spare tire rack vertical support is welded on the frame loading surface, and the spare tire anti-loosening fastening component is detachably installed on the top of the spare tire rack vertical support. The maximum size of the upper plane of the spare tire rack vertical support is larger than the center hole diameter of the spoke plate of the smallest specification semi-trailer tire and smaller than the minimum inner diameter of the rim of the smallest specification semi-trailer tire. The maximum size of the spare tire anti-loosening fastening component is larger than the center hole diameter of the spoke plate of the largest specification semi-trailer tire.

[0007] Based on the above, the spare tire anti-loosening fastening component includes a spare tire rack fixing support. The spare tire rack fixing support is horizontally placed above the spare tire rack vertical support. The spare tire rack fixing support is connected to the spare tire rack vertical support through bolt parts. The length of the spare tire rack fixing support is larger than the center hole diameter of the spoke plate of the largest specification semi-trailer tire.

[0008] Based on the above, the spare tire support strut is a doorframe-shaped support frame with an open lower side. The lower ends of the vertical sections on both sides of the spare tire support strut are welded to the loading surface of the vehicle frame. The spare tire fixing support is horizontally placed directly above the upper horizontal section of the spare tire support strut. A first bolt hole is provided in the middle of the upper horizontal section of the spare tire support strut, and a second bolt hole corresponding to the first bolt hole up and down is provided in the middle of the spare tire fixing support. The first bolt hole and the second bolt hole are connected by a bolt member. The length of the upper horizontal section of the spare tire support strut is greater than the center hole diameter of the smallest specification semi-trailer tire spoke plate and less than the minimum inner diameter of the smallest specification semi-trailer tire rim.

[0009] Based on the above, the bolt member includes a fixing support bolt and a locking nut. The fixing support bolt passes through the first bolt hole and the second bolt hole from bottom to top. The lower end nut of the fixing support bolt is closely attached to the bottom of the upper horizontal section of the spare tire support strut, and the locking nut is threadedly connected to the rod portion of the fixing support bolt and presses against the top of the spare tire fixing support.

[0010] Based on the above, a spare tire reinforcement support is welded between one side of the upper horizontal section of the spare tire support strut and the loading surface of the vehicle frame.

[0011] The utility model has substantial features and progress compared with the prior art. Specifically, the beneficial effects of the utility model are as follows:

[0012] (1) The universal spare tire fixing rack is of a flat type, with a safe and stable structure, and can be arranged at any position on the loading surface of the low-bed semi-trailer vehicle frame, facilitating the installation and removal of the tire;

[0013] (2) The universal spare tire fixing rack can meet the assembly requirements of different tire rims, and no relevant spare tire fixing rack parts need to be replaced when changing the tire specifications;

[0014] (3) A spare tire reinforcement support is welded between the spare tire support strut of the universal spare tire fixing rack and the loading surface of the vehicle frame, increasing the overall strength and stability of the universal spare tire fixing rack and improving the safety of fixing the tire;

[0015] (4) The universal spare tire fixing rack uses a spare tire fixing support and bolt members to lock and fix the tire, improving the convenience of taking and placing the tire. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the utility model.

[0017] Figure 2 is a schematic diagram of the state of the utility model for horizontally installing and fixing a semi-trailer tire.

[0018] Figure 3 is a schematic diagram of the state of the utility model for horizontally installing and fixing a larger specification semi-trailer tire.

[0019] Figure 4 It is a schematic diagram of the state of the flat installation and fixation of the tires of smaller-sized semi-trailers in the present utility model.

[0020] In the figure: 1. Spare tire support strut; 2. Frame loading surface; 3. Spare tire support fixing strut; 4. Fixing strut bolt; 5. Locking nut; 6. Spare tire support reinforcement strut; 7. Tire; 8. Spoke plate; 9. Rim. Specific embodiments

[0021] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0022] As Figures 1-4 shown, a general spare tire fixing bracket for a low-bed semi-trailer includes a spare tire support strut 1 and a spare tire anti-loosening fastening assembly. The bottom of the spare tire support strut 1 is welded to the frame loading surface 2, and the spare tire anti-loosening fastening assembly is detachably installed on the top of the spare tire support strut 1. The maximum dimension of the upper plane of the spare tire support strut 1 is greater than the central hole diameter of the spoke plate 8 of the smallest-sized semi-trailer tire and less than the minimum inner diameter of the rim 9 of the smallest-sized semi-trailer tire. The maximum dimension of the spare tire anti-loosening fastening assembly is greater than the central hole diameter of the spoke plate 8 of the largest-sized semi-trailer tire. The specifications of semi-trailer tires are common knowledge in the semi-trailer field.

[0023] In this embodiment, the spare tire anti-loosening fastening assembly includes a spare tire support fixing strut 3. The spare tire support fixing strut 3 is horizontally placed above the spare tire support strut 1. The spare tire support fixing strut 3 is connected to the spare tire support strut 1 through a bolt member. The length of the spare tire support fixing strut 3 is greater than the central hole diameter of the spoke plate 8 of the largest-sized semi-trailer tire.

[0024] In this embodiment, the spare tire support strut 1 is a door-frame type support frame with an open lower side. The lower ends of the two vertical sections of the spare tire support strut 1 are welded to the frame loading surface 2. The spare tire support fixing strut 3 is horizontally placed directly above the upper horizontal section of the spare tire support strut 1. A first bolt hole is provided in the middle of the upper horizontal section of the spare tire support strut 1. A second bolt hole corresponding to the first bolt hole up and down is provided in the middle of the spare tire support fixing strut 3. The first bolt hole and the second bolt hole are connected through a bolt member. The length of the upper horizontal section of the spare tire support strut 1 is greater than the central hole diameter of the spoke plate 8 of the smallest-sized semi-trailer tire and less than the minimum inner diameter of the rim 9 of the smallest-sized semi-trailer tire.

[0025] In this embodiment, the bolt member includes a fixing strut bolt 4 and a locking nut 5. The fixing strut bolt 4 passes through the first bolt hole and the second bolt hole from bottom to top. The lower nut of the fixing strut bolt 4 abuts against the bottom of the upper horizontal section of the spare tire support strut 1. The locking nut 5 is threadedly connected to the rod portion of the fixing strut bolt 4 and presses against the top of the spare tire support fixing strut 3.

[0026] In this embodiment, a spare tire rack reinforcing brace 6 is welded between one side of the upper horizontal section of the spare tire rack vertical brace 1 and the frame loading surface 2, which can increase the overall strength and stability of the universal spare tire fixing rack and improve the safety of fixing the tire 7.

[0027] This embodiment meets the use and installation of mainstream tires in the market. For example, Figure 3 As shown, when adapting to a larger-sized tire 7, the height of the spare tire rack vertical brace 1 is less than the flat-laying height of the tire 7. When the tire 7 is flat-laid above the spare tire rack vertical brace 1 (the spare tire rack fixing brace 3 is previously removed from the spare tire rack vertical brace 1 and stored in a specific toolbox), the tire 7 can drop onto the frame loading surface 2. Then, place the spare tire rack fixing brace 3 on top of the spoke plate 8. After passing the fixing brace bolt 4 vertically upward through the first bolt hole, the central hole of the spoke plate 8, and the second bolt hole from below the upper horizontal section of the spare tire rack vertical brace 1, thread the lock nut 5 onto the fixing brace bolt 4 and press it against the top of the spare tire rack fixing brace 3 to press the spare tire rack fixing brace 3 against the spoke plate 8 to prevent the tire 7 from loosening and achieve the fixing purpose. As Figure 4 shown, when adapting to a smaller-sized tire 7, the height of the spare tire rack vertical brace 1 is greater than the flat-laying height of the tire 7, and the length of the upper horizontal section of the spare tire rack vertical brace 1 is greater than the diameter of the central hole of the spoke plate 8. When the tire 7 is flat-laid above the spare tire rack vertical brace 1, the central hole part of the spoke plate 8 directly falls onto the upper plane of the upper horizontal section of the spare tire rack vertical brace 1, and the tire 7 hangs above the frame loading surface 2. Then, place the spare tire rack fixing brace 3 on top of the spoke plate 8. After passing the fixing brace bolt 4 vertically upward through the first bolt hole, the central hole of the spoke plate 8, and the second bolt hole from below the upper horizontal section of the spare tire rack vertical brace 1, thread the lock nut 5 onto the fixing brace bolt 4 and press it against the top of the spare tire rack fixing brace 3 to press the spare tire rack fixing brace 3 against the spoke plate 8 to prevent the tire 7 from loosening and achieve the fixing purpose. This universal spare tire fixing rack has a simple structure, can be arranged at any position on the frame loading surface 2, and has strong versatility.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A universal spare tire fixing bracket for low-bed semi-trailer, characterized by: It includes a spare tire stand support and a spare tire anti-loosening fastening assembly. The bottom of the spare tire stand support is welded to the loading surface of the frame. The spare tire anti-loosening fastening assembly can be detachably installed on the top of the spare tire stand support. The maximum size of the upper plane of the spare tire stand support is larger than the center hole diameter of the smallest specification semi-trailer tire spoke and smaller than the minimum inner diameter of the smallest specification semi-trailer tire rim. The maximum size of the spare tire anti-loosening fastening assembly is larger than the center hole diameter of the largest specification semi-trailer tire spoke.

2. The universal spare tire fixing bracket for low-bed semi-trailer according to claim 1, characterized in that: The spare tire anti-loosening fastening assembly includes a spare tire rack fixing support, which is horizontally placed above the spare tire rack vertical support. The spare tire rack fixing support is connected to the spare tire rack vertical support by bolts, and the length of the spare tire rack fixing support is greater than the center hole diameter of the maximum specification semi-trailer tire spoke.

3. The universal spare tire fixing bracket for low-bed semi-trailer according to claim 2 is characterized in that: The spare tire rack support is a door frame type support frame with an open lower side. The lower ends of the vertical sections on both sides of the spare tire rack support are welded to the loading surface of the frame. The spare tire rack fixed support is horizontally placed directly above the upper horizontal section of the spare tire rack support. A first bolt hole is opened in the middle of the upper horizontal section of the spare tire rack support, and a second bolt hole corresponding to the first bolt hole above and below is opened in the middle of the spare tire rack fixed support. The first bolt hole and the second bolt hole are connected by bolts. The length of the upper horizontal section of the spare tire rack support is greater than the diameter of the center hole of the tire spoke of the smallest specification semi-trailer and less than the minimum inner diameter of the tire rim of the smallest specification semi-trailer.

4. The universal spare tire fixing bracket for low-bed semi-trailer according to claim 3 is characterized in that: The bolt assembly includes a fixing support bolt and a locking nut. The fixing support bolt passes through the first bolt hole and the second bolt hole from bottom to top. The lower end nut of the fixing support bolt is tightly against the bottom of the upper horizontal section of the spare tire rack support. The locking nut is threadedly connected to the rod of the fixing support bolt and presses tightly on the top of the spare tire rack fixing support.

5. The universal spare tire fixing bracket for low-bed semi-trailer according to claim 3 is characterized in that: A spare tire rack reinforcement support is welded between one side of the upper horizontal section of the spare tire rack stand and the frame loading surface.

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